From d9764b6b42a648daf3518166b4304bdac3f5c30e Mon Sep 17 00:00:00 2001
From: Max Bradbury <max@tinybird.info>
Date: Tue, 23 Jun 2020 12:48:42 +0100
Subject: [PATCH] error for room type

---
 src/game.rs | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/game.rs b/src/game.rs
index bf37718..e66b1fb 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -33,12 +33,15 @@ impl RoomFormat {
 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
 pub enum RoomType {Room, Set}
 
-impl From<&str> for RoomType {
-    fn from(string: &str) -> RoomType {
+#[derive(Debug)]
+pub struct InvalidRoomType;
+
+impl RoomType {
+    fn from(string: &str) -> Result<RoomType, InvalidRoomType> {
         match string {
-            "ROOM" => RoomType::Room,
-            "SET"  => RoomType::Set,
-            _ => panic!("Unrecognised room type"),
+            "ROOM" => Ok(RoomType::Room),
+            "SET"  => Ok(RoomType::Set),
+            _ => Err(InvalidRoomType),
         }
     }
 }